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Real Estate Assets (Details) - Subsequent Event - USD ($)	Apr. 29, 2016	Apr. 26, 2016
Yucca Valley Retail Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Asset purchase price		$ 1,250,000
Havana Parker [Member]
Real Estate And Accumulated Depreciation [Line Items]
Asset purchase price	$ 3,300,000

X

- Definition

Assets Sales Price.

+ References

No definition available.

+ Details

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Namespace Prefix:	netr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: